Tax-extractor.



EITSCHUDY.

TAR EXTRAGTOR.

APPLICATION mzo ocr. 2. 1914.

Patented Oct. 5, 1915.

- 3 SHEE TS-SHEET 1.

F. TSCHUD-Y.

TAR EXTRACTOH.

APPLICATIGN FILED on. 2. 19:4.

Pat nted 001:. 5, 1915.

3 SHEETS-SHEET 2.

F. TSC I Y.

TAR EX 0R.

APPLICATION man 001.2.1914.

l 155fi87, Patented 00 11.5,1915.

V a SHEETS-SHEET 3.

rnnnnmcn rs'onuny, or ramrrnnn, ALABAMA.

TAR-EXTBACTOR.

Specification of Letters Patent.

Patented Oct. 5, 1915.

Application filed October 2 1914. Serial No. 864,632.

To all whom it may concern} Be it known that I, FREDERICK TsoHUD'Y,

a citizen of the United States, and resident ofF airfield, in the county of Jeiferson and State of Alabama, have invented certain new and'useful-Improvements in Tar-Extractors, of which the following is a specifisuspension and tar fogs, prior to the extraction of sulfate of ammonia bythe so-called direct process.

In the process of manufacture of ammonia from gases produced by distillation of fuel such as coal in coke ovens, gas retorts. gas producers and the like, the gas evolved fromv the fuel charged during the distilling period is usually cooled in order to condense the tar, as well as water, contained therein. This condensation is usually accomplished in air or water coolers, or both, and the temperature of the gas is thus reduced to about 75 to 85 F. At such a temperature practically all the tar contained in the gas, as well as most of'the water, will separate from the gas and theseby-products are collected in the'usual manner, while the gas is passed to the saturators. However, since the gas flows through the apparatus and pipelines with a considerable velocity, small particles oftar and in particular more costly. tarry oils-which do not condense at the temperature stated remain in suspension and are carried along with the gas. Eventually, if not properly arrested in their travel, they will reach the saturator where their presence is the cause of trouble in operation and result of contaminated sulfate of ammonium. Many appurtenances are usedto intercept this tar fog of which the most important are the so-called tar. scrubber. for the indirect and the tar extractors for the direct am; monium sulfate process. Washers of various types in which the gas flows counter current to a very fine spravof low temperature tar, actuated by centrifugal force, aroused for both processes. Most of the apparatus mentioned necessarily require power. for their operation. according. to 'the sizeand amount of" work to be performed, while others depend only on a certain amount of pressure loss in the gas. It is at once evident that whether the power c'onpti'on is expressed in horse power. or pounds of differentlal pressure that the energy required to produce this power must be of artificial means,' leading back to the boiler plant or sourceof power. It is therefore evident that the most economical tar extractor is the one in which the power consumption is the lowest possible, combined with the greatest efficiency of tar extraction. 1

In plants where positive displacement or rotary blowers are used my apparatus is not particularly adapted for use as its design and purpose is in connection with centrifugal or turbo blowers. In the systems using rotary blowers the gas is moved by displacement of positive masses, irrespective of pressure, and the gas therefore does not undergo any changes as to the consistency relative totarry matters and aqueous vapors; "Consequently power must be applied inone 'form or another to extract the tar by apparatus such as referred to. When centrifugal blowers are used, the gas undergoes ,a decided change relative to its contents of tarry matter, as well as aqueous vapors. The high peripheral speed of the centrifugal blower v has a tendency to eject from thegas by impact a large amount of the heavier particles of tarry matter and Water in suspension permitting the gas to travel on with a very fine fog of tar particles of an infiniteslmally 'small size. It has been actually demonstrated that by the use of centrifugalblowers 3% of the total'tar production has been extracted bv the centrifugal force of the turbo action.

The tar fog still remaining in the gas cannot be removed efficiently or economically by any of the apparatus mentioned or now in use, 'while the tar extractor described below has accomplished the task positivelyat' a loss of }1 water columnpressure only, which is about equivalent to the ordinary frictionalloss in piping'or lengtlif throughwhich the. gases have to pass-in theappa ratus to b o-described. I

.My invention will be'more readily-under 'sections "11, 1'2, 13, 14, 15. The gasesjto be treatedare adaptedto enter 'th1-'ough 'a port 16, formed in the section'12. Immedie the section, the gases impinge against an 'arcuate. baffle 17, spaced" away from th walls of the section by means of bolts an thimbles 17, as best shown in Fig. 3. W1thin the section 13, is a diaphragm' 18-,- proapertures being flanged as at 19. Within vided with apertures 'therethrough, .said

the section 14:, is locatedcheckerwork .20,

consisting of bricks, the bricks of each ceufse being laid in parallelism but at an angle of 45 to the bricks of the courses abpi/e and below the same. As shown in Figs. 4 and 5, the bricks 21, of each course are spaced apart none of the bricks of a course being in contact with another-brlck of that course. By this means I provide. a'

- multitude of tortuous gas passages through the checkerwork. -;The shelllt, is surmounted by the section 15, which supports a dome 22, providing an outlet for the treated gases. I

at'elyfupon entering the chamber formed-by removal of all tar .in suspension. flangessurroundingthe ports in the dia- The section 11, of the extractor is the seal pot and consists in a casing having an inclined portion 23, with a concentric recess or Wall 24, within which the lower end of a tube 25 terminates, this tube being connected with a concentric opening 26, formed as apart ofthe-diaphragm 18. A drain opening 27, is provided for the wall 24. The tar extracted is removed by over-flow through the pipe28, into a further tar seal pot 29, from whichit is removed foruse.

, The gas enterin contacts the bafiie 1 and due to the impact and sudden change of direction, a certain amount bff'tlle tarry matter is impinged upon this deflector and flows into the seethis chamber the gas passes upward through 'the'ports in the diaphragm 18, into and tar which will. bygravity action fallfontpi; the diaphragm 18, and are directed 'down I ,the tube 25, into the collecting section 11."

ue to an areamany times larger than the Copies of this patent may be. obtained :51-

through the port 16,

-ti'on 11. 'This'bafile splits the gas' and causes it tota'ke a circling motion along the .walls of the distributing chamber 12. From inlet nozzle, the gas; travels through the'extractor at a'considerably reduced velocity "and permits every particle of the gas to be impinged against the checkerworkand lt iie e phragm 18, prevent the tar from mingling with thefrising gases.

column or about equal to the pressure loss in two bends of a the inlet nozzle."

I claim: '1. In a tar extractor,'-the combination of pipe. of the diameter of a shell, walls forming a plurality of chambers, including a two-part distributing chamber, a separating chamber, and checkerwork in said separating chamber, said twopart distributing chamber provided, in the lower portion, with a gas port, a vertical arcuate baffle platedisposed'near said gas port, said upper, portion provided with a diaphragm having flanged apertures therethrough, said flanges extending upward ly, and a tube, secured to said diaphragm and extending downwardly through said lower portion of said chamber, substantially as describe d.

2. In a tar extractor, the'combinati'o n of y a shell, a sealing pot upon which said shell is supported, said shell divided into a ,plurality of compartments, including a twopart distributing chamber, a separating chamber provided with checkerwork, said seal provided withacentral depression, a

drain leading therefrom, the lower portion of the distributing ,chamber'provided with a gas inlet port, an arcuatebafiie plate vertically disposed infront of said gas port, the upper portion of the distributing chamber having a diaphragm therein, said diaphragm provided with flanged apertures, the flanges, extending upwardly and a downwardly-extendingtube attached to said diaphragm and adapted to enter said central depression in said seal pot, substantially as described.

FREDERICK TsoHUDY.

Witnesses:

W. G. HARBIsoN, M. HUGHES.

fljre cent each, by addressing the G'ommissioner of Patents.- 

